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. UNITED STATES PATENT Frrcn.

ALLEN O. BRANTINGHAM, OF TOLEDO, OHIO, ASSIGNOR TO THE NORDYKE dc MARMONCOMPANY, OF INDIANAPOLIS, INDIANA.

SAIFTING-MACHINE.

fiPECIFICATION forming part of Letters Patent No. 547,596, dated October8, 1895.

7 Application filed November 2, 1894. Serial No. 527,757. (No model.)

To all whom it may concern:

Be it known that I, ALLEN O. BRANTINGHAM, a citizen of the UnitedStates, residing at T- ledo, in the county of Lucas and State-of Ohio,have invented certain new and useful Improvements in Sifting-Machines,of which the following is a specification.

The object of my present invention is to improve and simplify that classof sifting-machines in which the sifter is given a horizontal gyratingmotion while suspended by hangers capable of oscillating to accommodatesuch motion.

A machine embodying said invention will be first fully described, andthe novel features thereof then specifically pointed out in the claims.

Referring to the accompanyingdrawings,

which are made a part hereof, and on which similar letters and numeralsof reference indicate similar parts, Figure 1 is a central verticalsectional view of a sifting-machine embodying my said invention and theframe of a roller-mill arranged above it, except that the sectionalpoint is shifted at the hangers to the center of such hangers, thusshowing, also, their construction; Fig. 2, a top or plan view of thesifting-machine separately as seen from the dotted line 2 2 in Fig. 1;Fig. 3, a transverse sectional view as seen from the dotted line 3 3 inFig. 1, and Figs. 4 and 5 detail views illustrating the adjustablebearing.

In said drawings the portions marked A represent the framework of agrinding-mill (a roller-mill is illustrated) arranged to dischargedirectly into the sifting-machine; B, the framework of saidsifting-machine; O, the body of the sitter; D, an operating-bar by whichmotion is imparted thereto, and E a crank-shaft by which the same isdriven.

The mill A may be of any desired form or construction. An ordinaryroller-mill is illustrated. A hopper-like receptacle A is shown below,into which the product of the grindingrolls falls and by which it isconveyed to the upper end of the sifter G and is there deposited in along sheet extending substantially across the sifter. The point of thishopper extends just below the sides of the sifter, and at the lower endthe central portion is divided to permit the passage of the bar D.

The framework Bis of suitable form and construction for the purpose andcarries the various bearings Y necessary for the moving parts of themachine. v

The sifter O is preferably rectangular, in horizontal outline, as shownin Fig. 2, and is supported by the hangers O, preferably one at eachcorner, as shown. These hangers I have shown in the formof rods'withsuitable convex bearing parts 0 on the ends, which rest in concavebearings 1 on the sifter at the lower ends and in similar bearings 2 onthe framework at the upper ends. There are nuts 0 in connection with thehangers O, by which an accurate adjustment may be had or the adjustmentvaried from time to time. The sifter in its upper portion hassubstantially perpendicular sides for a short distance, and within thesesides, at the point indicated by a line 0 made up of short dashes, is acloth sieve extending over nearly its entire surface. At the upper endof the sifter is the board 3, which receives the greater part of theforce of the discharge of the stock from the grinding-mill or ingressspout or hopper, and at the lower end, beyond the sieve, is adischargespout 4 for the coarser material which will not pass throughthe sieve. .Below the sieve is the bottom of the sifter, in the form ofa flat hopper, which terminates in a discharge-spout 5, from which. thesifted material is discharged. Any suitable conveyers or receptacles maybe connected to these spouts 4 and 5 in any desired manner; but as theseform no part of my present invention they are not shown or describedherein. Just above the cloth sieve O is a framework 0 which extendssubstantially all over said cloth sieve and has numerous small barsrunning from end to end or side to side thereof, and extendingdownwardly from these bars are small round pins 0 the lower ends ofwhich are armed with felt or some other soft substance, and which comeinto close proximity to or barely touch the sievecloth 0. These pinsextend into the material passing over the sieve and serve to prevent itsaccumulating at any one point, but rather act to overturn, disintegrate,and disperse it, although there is no independent motion of the framewhich carries them from the main frame of the sifter, the whole movingtogether and uniformly. The soft tips of felt or other suitable materialprevent any abrasion or wearing of the cloth which would result fromwood or other harsh material coming in direct contact therewith, owingto the vibration of the machine.

The bar D extends longitudinally over the top of the sifter O and isconnected to a crossbar 0 thereon by a pivot-pin 0 At one end said baris connected to a crank-pin e on the crank-shaft E and at the other endit passes through a pivoted bearing D, mounted in an adjustable bearinga on the frame 13. The operation is, as will be readily understood, tocause the sifter to move in an elliptical path, the barD operating as apitman in moving it longitudinally and as a lever of the second order inmoving it laterally, so that its operating-point, being at about thecenter, the lateral movement is only about half as much as thelongitudinal movement. The relative positions of the attaching-points,and consequently the comparative distance of the 1011- gitudinal andlateral movements, I prefer to make adjustable, as thus the operationupon stock of various kinds may be varied as desired. This may be doneeither by making the bearing a, cross-bar C or other attaching part sothat its position may be shifted. I have shown the bearing a, as themovable part and illustrated a means of moving said part in thedrawings. In the detail drawings, Fig. 4, which shows the bearings awith the pivoted bearing D removed therefrom, said bearing a is shown asmounted upon a baseplate P and secured thereto by bolts 23, and saidplate is in turn secured to the cross-bar B of the frame B. Manifestlyby loosening the nuts on the bolts 1) the bearings a can be slippedalong to any desired point on the plate P and there firmly secured bytightening up said nuts, the heads of which are shown in Fig. 5 asentering appropriate grooved ways therefor in said plate P. Mauifestly,however, many other methods of adjustment may be provided withoutdeparting from my invention,the particular construction and arrangementshown being only for the purpose of illustrating a means ofaccomplishing this result.

I have discovered by experiment that the peculiar movement described isof great advantage in a machine of this character. Such tests havedemonstrated that with a strictly circular movement the tendency of thestock being treated is to bank up against the sides of the sifter ratherthan to travel over it uniformly. The elliptical movement corrects thistendency and serves to break up and disintegrate instead of consolidateand bank up the stock and aids the work of the pins 0 The crank-shaft Eis mounted verticallyin bearings a and a on the framework A, the latterof which is shown as a step-bearing, and carries the crank or wrist-pincon its upper end, through which it drives the bar D. It is driven fromthe shaft E by means of the gear-wheels 6 and 7, mounted on said shaftsE and E, respectively, as shown, and said shaft E is usually driven fromany suitable source of power (not shown) by abelt running to a pulley 8thereon.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination, in a sifting machine, with a suspended sifter, of anoperating bar extending across the machine and connected thereto at asubstantially central point, a driving crank-shaft connected to said barat one end, and a swiveling bearing in which said bar rests at the otherend, whereby said sifter is driven in an oval path and given a greaterlongitudinal than lateral movement, substantially as set forth.

2. The combination, in a sifting machine, with a suspended sitter, ofmeans for operating the same consisting of a driving bar extending overand across said sifter, and mechanism whereby said bar is driven in ahorizontal plane, while the sitter is driven with an unequal gyratingmovement, substantially as set forth.

3. The combination, in a sifting machine, with a suspended sifter, ofmeans for operating the same consisting of a bar connected thereto, adriving crank-shaft connected to one end of said bar, a swivelingbearing for said bar at the other end, and an adjustable bearing forsaid swiveling bearing, substantially as and for the purpose set forth.

at. The combination, in a sifting machine, of a suspended sitter, anoperating bar connected thereto at a substantially central point, adriving crankshaft connected to said bar at one end, and a swivelingbearing for said bar at the other end, the points of attachment betweensaid sifter, said bar and one or more of its connections beingadjustable, whereby the elliptical movement described may be varied asdesired.

In witness whereof I have hereunto set my hand and seal, at Toledo,Ohio, this 30th day of October, A. D. 1894.

ALLEN C. BRANTINGIIMI. 1

Witnesses: i

M. W. PLATT,

.ino. J. RUDD.

